According to Deadline, Panabaker will play bioengineering expert Caitlin Snow, who lost her fiancé during a lab explosion, while Cosnett will play Detective Eddie Thawne, who is new to the Central City Police Department.

This is big news for comic fans as Eobard Thawne is the alias for Professor Zoom, the sadistic ‘Reverse-Flash’ who can mimic our hero’s superspeed with murderous consequences.

Killer Frost on the cover of Justice League of America issue 7.2

Caitlin Snow meanwhile, is the real name of Killer Frost, a Firestorm villain who can conjure ice spikes and sub-zero temperatures, but must feed on human life to stay alive.

Both characters have some pretty weird and wonderful back stories, so we can expect a full Arrow-style reinvention…